Assigotob



C. W. HAZELETT..

CASTING APPARATUS.

APPLICATION FILED APR,|6, I917.

1,351,379. Patented Oct. 14,1919.

Q N VEN TOR.

IIW. HA Z 21E T T A TTORNE Y an snares ATEN i ion.

GLAIRENCE W. HAZELETT, 0F LAEWOOD, OHIO, ASSIGNOR/BY MESNE ASSIGNMENTS, TO NATIONAL CARBON COMPANY, INC., A CORPORATION OF NEW YORK.

casrme APPARATUS.

, To all whom it may concern:

scribed as it would be applied to apparatus for casting lead storage battery parts, it is not to be understood limited thereto.

The object of the invention is to permit simultaneous casting of a plurality of-articles and to facilitate the removal .of the castings from the mold. In the broad faspect it consists in slicing off, as it were, a thin slab from the mold half which has the greater tendency to retain the casting, whereby an ejector plate is formed to withdraw the casting therefrom.

that the invention is The objects of the invention may be at-" tained with most types of casting machines, but the arrangement is especially advantageous when used in the manner described and illustrated in the accompanying drawings in which Figure 1 is a side -view of a storage battery-parts casting machine embodying the rality of cyllndrical members is shown in invention.

Fig. 2 is a top view of the apparatus of Fig. I

Fig. 3 is a section on the line AA 0 Fig. 2.

Fig. 4 is a plan view of the ejector plate of Figs. 1 to 3.

straps for storage battery grids.

Fig. 6 is a plan view of an ejector plate adapted to be used in casting the spacing straps of Fig. 5.

Fig. 7 isa broken cross sectional view through a mold containing the spacing straps of Fig. 5 and corresponds with the line BB of the spacing strap. I

Referring to the drawings, a stationary vertical frame 1 projects from a supportin base 2. One side 3 of the mold is secure in the upper end of the frame 1 in any suitable manner. The other side 4 of the mold is fitted in a frame 5 pivoted at 6. The

Fig. 5 is a plan view of a series of spacing Specification of Letters Patent.

I Application filed April 16, 1917. Serial No. 162,314.

Patented Oct. 14, 1919.

frame 5 and section 4 of the mold may be I turned about the pivot point 6 to separate I the two parts of the mold by means of a handle .7. The handle is pivoted at 8 to projecting arms 9 attached to the stationary frame 1. The link 10 connects the end ll of the handle with the lugs 12 which project from 'the movable frame 5. The mold will be opened by drawing the handle 7 downward and is closed by movement in the opposite direction.

My invention consists in placing a plate 13 between the parts 3 and 4 of the mold. This plate which will hereafter be called the ejector plate has a handle 14'on each side and a plurality of openings 15 near the edges which end in narrow slots 16. \(Fig.

4). The ejector pla'te will be attached to the side 3 of the mold by means of pins 17 fitted into the edges'18 of stationary frame 1. The pins have heads 18 adapted to readilypass through the openings 15 of the ejector plate and the body portion of the pins is substantially the same diameter as the width of slots 16. When the holes of the lug pins so that the body of the pins fitsin the slots 16, the mold cavities 19 and 20 of the mold parts 3 and 4 respectively, are alined with corresponding openings 21 in the ejector plate (Fig. 4). 1

To illustrate the manner in which the ejector plate is utilized, a mold for a plu- Fi 3. The openings in each side of the mo (1 are inclined to provide draft in the usual manner and the-draft in theopenings of the ejector plate is in the same direction as that in the movable side 4 of the mold. The various openings of part 3 of the mold are connected to the 95, gate 22 by means of passages 23 in part3 of the mold. The

cavities 20 in the retaining side 4 of the mold therefore cover less surface than the openings 21 in the ejector plate or the cavities 19 in the non-retaining side, so that parts of the article cast in the non-retaining side serve as abutments which prevent the castings from being drawn through the e ector plate by the force exerted by the retaining side of the mold. If the non-retainmg side is a fiat surface, then by having the openin side ad acent the flat surface of the mold the same result will be obtained. To utilize the 110 so 7 ejector plate are placed over the correspondin the ejector plate largest"at the ejector plate in accordance with the invention, the molded article is caused to have a greater tendency to stick in the mold part 4: than in mold part 3. This may be done in various ways, as for example, by dusting powder on the molds to vary the sticking tendency. It ispreferable, however, to take care of this by use of suitable draft on each side, or suitably locating the parting line. After the molten metal has solidified the mold is divided by pulling handle 7 downward. As the sticking tendency in side 4 is greater than in side 3, the molded article will be drawn out of side 3 as the frame 5 is moved. The ejector plate will also be moved along withthe article and mold part 4, because the article cannot be drawn'through the openings in the ejector plate by move ment in this direction. The direction of the draft in the ejector plate, has well as the material in gate 22 and passages 23, pre vents the article from being removed except from the side 3 of the mold. When the side 4: and ejector plate 13 move through a distance sufiicient to remove the articles from mold part 3, the heads 18 of the pins 17 engage the ejector plate 13 and prevent it from further movement. The article will then be held by the ejector plate, and is thus pulled out of the movable side l of the mold. This separates the articles from both sides of the mold and leaves them in the ejector plate which is supported on pins 17. The operator removes the articles by grasping the handles 14 and raising the plate so that the heads 18 of the pins pass through the openings 15, and then tipping the plate so that the articles drop out. It will be evident that the use of slots and retaining pins or other means for separating the articles from side 4 is not absolutely essential, as this and articles by means of the handles 14. In castin a spacing strap for storage battery gri s such as shown in Fig. 5, one side of the mold having the gate 22 is fiat and the draft is all in one direction. The sticking tendency on side 3 is therefore very slight. After the lead has been poured in the mold and solidified, the side 4, the articles and the ejector plate all move away from side 3 until the heads of the ejector pins 17 engage the ejector plate as previouslydescribed. The ejector plate is shown as having draft in a direction which prevents the articles from being removed from the retaining side of the mold, but it will be evident that co ecting webs or other configurations in 5 o iold part 3 may serve the same purpose that draft will be unnecessary in the ejector plate.

Although I have only described my invention as applied to relatively simple articles, it will be evident to one skilled in the art that it is capable of many modifica anama tions and elaborations, and the invention is limited only by the scope of the claims.

Having described my invention, what I claim is: I

1. In'apparatus for molding articles, a' mold divided into two parts, one of said parts having suitable recesses therein, and an ejector plate between said parts extending over the entire recessed face and having holes adapted to connect with the recesses, one face of said ejector plate forming a separating line of the mold.

2. In a mold for metal castings, an article retaining part having cavities therein, a non-retaining part separable from the retaining part, and an ejector plate between the cavities of the first mentioned part:

3. In a mold for met-al'castings, an article retaining part having cavities therein, a non-retaining part separable from the 're taining part and. having cavities therein larger than the first mentioned cavities and an ejector plate between the mold parts having openings smaller than the second mentioned cavities.

4. In apparatus for casting articles, a mold divided into two parts, one of said parts having a greater tendency to retain the articles than the other, and an ejector plate between saidparts, said ejector plate being movable with the part having the less retaining tendency and adapted to retain the articles when withdrawn from the last mentioned part. 1

.5. In apparatus for casting articles, a mold divided into two parts, one of said parts having a greater retaining tendency than the other, an ejector plate between said parts adapted to prevent the articles. from .being drawn therefrom by the retaining may be done by removing the ejector plate part, means for separating the ejector plate and the retaining part from the other part and means adapted to engage the ejector plate to separate it from the retaining part after the mold parts have been separated.

6. In apparatus for casting articles, a mold divided into two parts, one of said parts havin a greater retaining tendency than the ot er, means for separating the mold parts, an ejector plate between said parts adapted to prevent the articles from being drawn therefrom by the retaining part, said ejector plate having a plurality of slots, a plurality of pins cooperating with said slots for holding the ejector plate articles from being drawn from said ejector plate by the retaining part of the mold and means for suspending the ejector plate from the non-retaining part adapted to permit a limited movement of the ejector plate after the mold parts are separated whereby the articles are removed from the retaining part of the mold.

8. In apparatus for casting articles, a mold divided into a non-retaining and a retaining part, a stationary vertical frame for kit the non-retaining part, a pivoted frame for the retainin part, an ejector plate between the two mo d parts having a plurality of slots, a plurality of pins on said stationary frame for suspending the ejector plate, said pins having heads adapted to allow limited movement of the ejector plate with the retaining part of the mold.

In testimony whereof, I hereunto aflix 20 my signature. 

